Sony's could possibly could do Backwards Compatibility by having the user put in the game disk for the PS3 and stream the game using Gaikai.
The assumes that the user would have enough Internet bandwidth to deliver the service.

However, what about longer term beyond the PS4. Could Sony use Gaikai to deliver games without a PS4 or PS5 and deliver those games to different devices such as tablets.
All you would need to buy is the game-pad controller and the service would work on many platforms at once.

Sony's could possibly could do Backwards Compatibility by having the user put in the game disk for the PS3 and stream the game using Gaikai.The assumes that the user would have enough Internet bandwidth to deliver the service.

However, what about longer term beyond the PS4. Could Sony use Gaikai to deliver games without a PS4 or PS5 and deliver those games to different devices such as tablets.All you would need to buy is the game-pad controller and the service would work on many platforms at once.

Sony's could possibly could do Backwards Compatibility by having the user put in the game disk for the PS3 and stream the game using Gaikai.The assumes that the user would have enough Internet bandwidth to deliver the service.

Unless Sony have managed to emulate the Cell then there is little chance of Gaikai streaming PS3 games any time soon, they would essentially need the whole hardware of a PS3 per user wanting to stream a game, which just isn't economical for them to do, especially in Sony's current state.

It is more likely that we would get streaming for PS1/2 games than PS3 games that can be emulated and virtualised on typical hardware.

However, what about longer term beyond the PS4. Could Sony use Gaikai to deliver games without a PS4 or PS5 and deliver those games to different devices such as tablets.All you would need to buy is the game-pad controller and the service would work on many platforms at once.

Sure, Gaikai was already able to deliver games without the need for a dedicated gaming console through TV's, as I previously mentioned I could see them streaming older games across multiple platforms.

Unless Sony have managed to emulate the Cell then there is little chance of Gaikai streaming PS3 games any time soon, they would essentially need the whole hardware of a PS3 per user wanting to stream a game, which just isn't economical for them to do, especially in Sony's current state.

It is more likely that we would get streaming for PS1/2 games than PS3 games that can be emulated and virtualised on typical hardware.

If they have a server built with cell, I don't see why it would not be possible to stream PS3 games to the console. The PS1/2 games can be emulated as you said.

Sure, Gaikai was already able to deliver games without the need for a dedicated gaming console through TV's, as I previously mentioned I could see them streaming older games across multiple platforms.

as if people will stream 15gb games! Xbox and Playstation will need to have full backwards compatability otherwise many will refuse to upgrade, they spent a fortune on their ps3/360 library.

You don't stream a whole game, the cloud crunches the whole game and streams an ultra compressed, custom low-loss video stream to your TV. Very different from downloading a game and letting your system crunch it for you. It's actually very feasible to do on a 5MB connection (yes, I am aware not everyone in the US has this).

I don't think it will work for the same reason that OnLive never really took off. You need a good connection, and even then you're still not seeing the game in the same way that a player who bought the disc would see the game.

Also, I haven't heard anything so far about there possibly being any issue about backwards compatibility, what brought up this idea?

Why would you stream for backwards compatibility if it requires you have the disc in the first place? SERIOUSLY?

I think the point the OP is making is based on the assumption that - like the PS3 with PS2 games - the PS4 won't have backwards compatibility. As such, having the disc would do nothing if the hardware wasn't compatible. However, the OP is suggesting that we use the PS3 disc as a verification process, and then the game would stream from a server that did have the hardware capability to run it.

But again, this is a thought process that hinges on there being backwards compatibility issues with the PS4 and PS3 games. I haven't heard of anyone voicing these kinds of concerns yet.

I don't think it will work for the same reason that OnLive never really took off. You need a good connection, and even then you're still not seeing the game in the same way that a player who bought the disc would see the game.

Also, I haven't heard anything so far about there possibly being any issue about backwards compatibility, what brought up this idea?

Sony bought Gakai, its not inconceivable that they will allow backwards compatibility through streaming.

But again, this is a thought process that hinges on there being backwards compatibility issues with the PS4 and PS3 games. I haven't heard of anyone voicing these kinds of concerns yet.

The rumours are that the PS4 will have an x86 cpu so that means no backwards compatibility.

I agree with worse looking game but for some reason people come to expect backwards compatibility with consoles thesedays, apart from including a CELL cpu inside the PS4 which would bump the price up to ridiculous levels there is not a lot they can do to add backwards compatibility.

I don't think it will work for the same reason that OnLive never really took off. You need a good connection, and even then you're still not seeing the game in the same way that a player who bought the disc would see the game.

Also, I haven't heard anything so far about there possibly being any issue about backwards compatibility, what brought up this idea?

BC on is PS4 being gone rumor due to the rumor of Sony switching over to the Arm cpu architecture.

Also, @OP as long as the united states has the 24th worst internet (speed, price, and accessibility) in the world (not joking) streaming to completely replace physical media is a ways off.

Sony had a patent about a playstation design where you could plug in a hardware module to add BC, I wish they would do that if PS4 will not have BC.That way people that want it would have to purchase it and give the best hardware BC possible.